Stacked plate heat exchanger for use as charge air cooler

Abstract

The invention relates to a stacked-plate heat exchanger for cooling charge air, having at least one first flow duct ( 21 ) for at least a first medium LL to flow through, and at least a second flow duct ( 22 ) for at least a second medium (KM) to flow through in order to cool the first medium (LL), wherein the at least one first flow duct ( 21 ) and the at least one second flow duct ( 22 ) are formed between adjacent plates ( 8, 9 ), and at least one plate ( 8, 9 ) has at least a first opening ( 12 ) for the first medium (LL) to flow through and at least two second openings ( 13 ) for the second medium (KM) to flow through into the at least one second flow duct ( 22 ), the at least one first opening ( 12 ) being arranged at least in certain sections between the two second openings ( 13 ), wherein the first opening ( 12 ) is at a smaller distance, at least in certain sections, from a central section (MA) of the stacked-plate heat exchanger ( 1 ) than one of the second openings ( 13 ).

1. A stacked-plate heat exchanger comprising:
 at least one first flow duct for at least a first medium to flow through; and 
 at least one second flow duct for at least a second medium to flow through in order to cool the first medium, 
 wherein the at least one first flow duct and the at least one second flow duct are formed between adjacent plates, wherein at least one of the adjacent plates comprises a first opening for the first medium to flow through and at least two second openings for the second medium to flow through, the first opening being arranged at least in certain sections between the two second openings, 
 wherein at least a portion of the first opening is at a smaller distance from a central section of the stacked-plate heat exchanger than at least one of the second openings, and 
 wherein at least a portion of an edge of the first opening is substantially in a shape of a normal distribution function 
 wherein at least one section of an edge of the first opening is in a shape of a polynomial y n =a n x 4 +b n x 3 −c n x 2 +d n x+e n  with n corresponding to a number of sections that form the shape of the polynomial. 
 
     
     
       2. The stacked-plate heat exchanger of  claim 1 , wherein:
 the at least one of the adjacent plates comprises a plate end ring section, and 
 the plate end ring section comprises at least one knob. 
 
     
     
       3. The stacked-plate heat exchanger as claimed in  claim 1 , wherein the at least one of the adjacent plates comprises a bead configured to separate the second medium from the first medium and to direct the flow of the second medium out of the at least one of the adjacent plates. 
     
     
       4. The stacked-plate heat exchanger as claimed in  claim 3 , wherein at least one bead end section of the bead is formed in a substantially delta shape in a region of one of the second openings, and wherein the at least one bead end section surrounds the one of the second openings, at least in certain areas. 
     
     
       5. The stacked-plate heat exchanger as claimed in  claim 3 , wherein the bead extends from one of the second openings to another of the second openings. 
     
     
       6. The stacked-plate heat exchanger as claimed in  claim 1 , wherein the first opening is of symmetrical design. 
     
     
       7. A stacked-plate heat exchanger comprising:
 at least one first flow duct for at least a first medium to flow through; and 
 at least one second flow duct for at least a second medium to flow through in order to cool the first medium, 
 wherein the at least one first flow duct and the at least one second flow duct are formed between adjacent plates, wherein at least one plate comprises a first opening for the first medium to flow through and at least two second openings for the second medium to flow through, the first opening being arranged at least in certain sections between the two second openings, 
 wherein at least a portion of the first opening is at a smaller distance from a central section of the stacked-plate heat exchanger than at least one of the second openings, and 
 wherein at least a section of an edge of the first opening is in a shape of a polynomial y n =a n x 4 +b n x 3 −c n x 2 +d n x+e n  with n corresponding to a number of sections that form the shape of the polynomial. 
 
     
     
       8. The stacked-plate heat exchanger as claimed in  claim 2 , wherein in a region of the plate end ring section, the edge of the first opening is spaced apart from a plate edge of the at least one of the adjacent plates by 2 mm to 30 mm. 
     
     
       9. The stacked-plate heat exchanger as claimed in  claim 8 , wherein the plate edge has an edge section, wherein an angle between the at least one edge at the edge section and a flow direction of the first medium is between 40° and 70°.